Beschrijving

Blu-ray (Otis gebruikt 3 draden)

Blu-ray (andere merken gebruiken 4 draden)

Wit licht (3 lijnen voor otis)

Wit licht (andere merken gebruiken 4 draden)

Rood licht (Otis gebruikt 3 draden)

Rood licht (andere merken gebruiken 4 draden)

A311 rood licht

The button is divided into blue light, white light, and red light, but the color of the light is different. For Otis, please buy 3-wire (Otis has no red light), other elevator brands please buy 4-wire, 3-wire and 4-wire cannot be used in common. 3-wire and 4-wire refer to internal wiring, not visible from the outside. There are 4 pins.